Sundeep Sahay, University of Oslo, Norway/HISP IndiaPetter Nielsen, University of Oslo, NorwayDharamjeet Faujdar, School of Public Health, PGIMER, Chandigarh, IndiaRajesh Kumar, School of Public Health, PGIMER, Chandigarh, IndiaArunima Mukherjee, University of Oslo, Norway/HISP India